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A.cpp
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47 lines (40 loc) · 796 Bytes
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#include <bits/stdc++.h>
using namespace std;
int main()
{
int n,x=0,y=0,z=0,t;
cin>>n;
int a[n];
vector <int> v,vv,vvv;
for(int i=0;i<n;i++)
{
cin>>a[i];
if(a[i]==1)
{
x++;
v.push_back(i);
}
else if(a[i]==2)
{
y++;
vv.push_back(i);
}
else
{
z++;
vvv.push_back(i);
}
}
t=min(x,min(y,z));
cout<<t<<endl;
for(int j=0;j<t;j++)
{
// for(int j=0;j<3;j++)
cout<<v[j]+1<<' '<<vv[j]+1<<' '<<vvv[j]+1;
// v.erase(v.begin()+j);
// vv.erase(vv.begin()+j);
// v.erase(vvv.begin()+j);
cout<<endl;
}
return 0;
}